TH72005KLD-BAA-000-TU datasheet, PDF

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TH72005KLD-BAA-000-TU: DescriptionIC XMITTER 315MHZ ASK/FSK 10QFN; CategoryTopical application Wireless rf/communication; File Size1MB，21 Pages; ManufacturerMelexis Technologies NV; Environmental Compliance

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TH72005KLD-BAA-000-TU Overview

IC XMITTER 315MHZ ASK/FSK 10QFN

TH72005KLD-BAA-000-TU Parametric

Parameter Name	Attribute value
frequency	315MHz
application	Alarm and security systems, RKE, TPMS
modulation or protocol	ASK，FSK
Data rate (maximum)	40kbps
Power - output	-12dBm ~ 11dBm
Current - Transmission	3.2mA ~ 10.3mA
Data interface	PCB, surface mount
Antenna connector	PCB, surface mount
storage	-
characteristic	-
Voltage - Power	1.95 V ~ 5.5 V
Operating temperature	-40°C ~ 125°C
Package/casing	10-VFDFN Exposed Pad

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TH72005

315MHz

FSK/ASK Transmitter

Features and Benefits



Fully integrated PLL-stabilized VCO

Frequency range from 290 MHz to 350 MHz

Single-ended RF output

FSK through crystal pulling allows

modulation from DC to 40 kbit/s

High FSK deviation possible for wideband

data transmission

ASK achieved by on/off keying of internal

power amplifier up to 40 kbit/s

Wide power supply range from 1.95 V to 5.5

Very low standby current

On-chip low voltage detector

High over-all frequency accuracy

FSK deviation and center frequency

independently adjustable

Adjustable output power range from

-12 dBm to +11 dBm

Adjustable current consumption from

3.2 mA to 10.3 mA

Conforms to EN 300 220 and similar

standards

10-pin quad flat no lead (QFN) package)

Application Examples



Tire Pressure Monitoring System (TPMS)

Remote Keyless Entry (RKE)

Automatic Meter Reading (AMR)

Alarm and security systems

Garage door openers

Home and building automation

Low-power telemetry

Wireless access control

Pin Description

top view

ASKDTA

FSKDTA

FSKSW

ROI

ENTX

VCC

VEE

O UT

V EE

PSEL

Ordering information

Product Code

TH72005

Legend:

Temperature Code:

Package Code:

Packing Form:

Ordering example:

Temperature Code

Package Code

Option Code

BAA-000

Packing Form Code

K for Temperature Range -40°C to 125°C

LD for QFN double

RE for Reel, TU for Tube

TH72005KLD-BAA-000-RE

General Description

The TH72005 FSK/ASK transmitter IC is designed for applications in the 315 MHz industrial-scientific-medical (ISM)

band. It can also be used for any other system with carrier frequencies ranging from 290 MHz to 350 MHz.

The transmitter's carrier frequency f

is determined by the frequency of the reference crystal f

ref

. The integrated PLL

synthesizer ensures that each RF value, ranging from 290 MHz to 350 MHz, can be achieved by using a crystal with a

reference frequency according to: f

ref

= f

/N, where N = 32 is the PLL feedback divider ratio.

REVISION 012 - JUNE 14, 2017

3901072005

Page 1 of 21

TH72005

315MHz

FSK/ASK Transmitter

Contents

Features and Benefits ................................................................................................................................ 1

Application Examples ................................................................................................................................. 1

Pin Description ........................................................................................................................................... 1

Ordering information ................................................................................................................................. 1

General Description ................................................................................................................................... 1

1. Theory of Operation ............................................................................................................................... 4

1.1. General................................................................................................................................................ 4

1.2. Block Diagram ..................................................................................................................................... 4

2. Functional Description ........................................................................................................................... 4

2.1. Crystal Oscillator................................................................................................................................. 4

2.2. FSK Modulation .................................................................................................................................. 5

2.3. Crystal Pulling ..................................................................................................................................... 5

2.4. ASK Modulation .................................................................................................................................. 6

2.5. Output Power Selection ..................................................................................................................... 6

2.6. Lock Detection .................................................................................................................................... 6

2.7. Low Voltage Detection ....................................................................................................................... 6

2.8. Mode Control Logic ............................................................................................................................ 7

2.9. Timing Diagrams ................................................................................................................................. 7

3. Pin Definition and Description ................................................................................................................ 8

4. Electrical Characteristics ........................................................................................................................ 9

4.1. Absolute Maximum Ratings ............................................................................................................... 9

4.2. Normal Operating Conditions ............................................................................................................ 9

4.3. Crystal Parameters ............................................................................................................................. 9

4.4. DC Characteristics ............................................................................................................................ 10

4.5. AC Characteristics............................................................................................................................. 11

4.6. Output Power Steps ......................................................................................................................... 11

5. Typical Operating Characteristics ......................................................................................................... 12

5.1. DC Characteristics ............................................................................................................................ 12

5.2. AC Characteristics............................................................................................................................. 15

6. Test Circuit ........................................................................................................................................... 18

6.1. Test circuit component list to Fig. 18 .............................................................................................. 18

REVISION 012 - JUNE 14, 2017

3901072005

Page 2 of 21

TH72005KLD-BAA-000-TU Related Products

	TH72005KLD-BAA-000-TU	TH72005KLD-BAA-000-RE	TH72005KLD-BAA-000-SP
Description	IC XMITTER 315MHZ ASK/FSK 10QFN	IC XMITTER 315MHZ ASK/FSK 10QFN	IC XMITTER 315MHZ ASK/FSK 10QFN
frequency	315MHz	315MHz	290MHz ~ 350MHz
application	Alarm and security systems, RKE, TPMS	Alarm and security systems, RKE, TPMS	Universal
modulation or protocol	ASK，FSK	ASK，FSK	ISM
Data rate (maximum)	40kbps	40kbps	40kbps
Power - output	-12dBm ~ 11dBm	-12dBm ~ 11dBm	11dBm
Current - Transmission	3.2mA ~ 10.3mA	3.2mA ~ 10.3mA	10mA
Data interface	PCB, surface mount	PCB, surface mount	-
Antenna connector	PCB, surface mount	PCB, surface mount	-
Voltage - Power	1.95 V ~ 5.5 V	1.95 V ~ 5.5 V	1.95 V ~ 5.5 V
Operating temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package/casing	10-VFDFN Exposed Pad	10-VFDFN Exposed Pad	10-VFDFN Exposed Pad

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